Added makefiles

makefile

+FOLDERS=mu-e-scattering/muone \
+        radiative-lepton-decay/babar/example \
+		michel-decay/validation michel-decay/demo-observable
+
+all:
+	for i in $(FOLDERS) ; do make -C $$i all ; done
+check:
+	for i in $(FOLDERS) ; do make -C $$i check ; done
+clean:
+	for i in $(FOLDERS) ; do make -C $$i clean ; done

michel-decay/demo-observable/makefile

+name=demo-observable
+figures=demo.pdf
+include ../../tools/makefile.conf

michel-decay/validation/makefile

+name=validation
+figures=comparison.pdf
+include ../../tools/makefile.conf

mu-e-scattering/muone/makefile

+name=muone
+plots=gauge.pdf gauge-aco.pdf nnlo.pdf nnlo-aco.pdf
+xs=xi-nlo.pdf xi-nnlo.pdf xs.tex
+figures=$(addprefix plots/,$(xs) $(plots))
+include ../../tools/makefile.conf

radiative-lepton-decay/babar/example/makefile

+name=example
+figures=meg.pdf ee.pdf
+include ../../../tools/makefile.conf

tools/makefile.conf

+SELF_DIR := $(dir $(lastword $(MAKEFILE_LIST)))
+
+PYTHON=python
+PEP8=pep8
+PY2NB = $(PYTHON) $(SELF_DIR)/py2nb.py -x
+JUPYTERCONV=jupyter nbconvert
+
+PEP8FLAGS=--ignore=E265,E266,W503,E121,E123,E126,E226,E24,E704,W503
+
+.DEFAULT_GOAL=all
+.PHONY:check clean
+
+%.ipynb: %.py
+	$(PY2NB) $<
+
+%.html: %.ipynb
+	$(JUPYTERCONV) --to html $<
+
+$(figures): $(name).ipynb
+
+all: $(name).html $(figures)
+
+clean:
+	rm -f *.ipynb *.pdf *.png *.html *.tex *.pgf
+
+check:
+	@res=$$(find . -name *.py -exec $(PEP8) $(PEP8FLAGS) {} \;) ; \
+	if [ -n "$$res" ]; then echo "$$res" ; fi